PA 6 PB 3 PB A 5 4 points Score 10 PA and B a 06 b 30 c

P(A) = .6, P(B) = .3, P(B | A) = .5

(4 points)

Score

10. P(A and B) =

a. .06

b. .30

c. .03

d .18

e. .05

Solution

or, P ( A and B ) = P(A) * P(B/A)

= 0.6 * 0.5

= 0.30